Posted on 2012-09-19
I came in this morning and found the following in event viewer;
A non-delivery report with a status code 5.4.0 was generated for recepient firstname.lastname@example.org,
Causes; This message indictaes a DNS problem or an IP address config problem. Check the DNS using DNS lookup.
What Syntax should I use? I just typed nslookup into the cmd line and was presented with an IP for ns1.mnet.net.uk.
This is sbs 2003, exchange 2003 sp 2.